Treatment of skins.



R. RIBOT.

TREATMENT 0F SKINS. APPLICATION FILED FEB. 27, 1912.

UNITED sTATEs PATENT oEEIoE.- l ROGER meer, or Paars,- FEANCE,AssroiIoR-ro sooin'rn La i'EaussEnrE -FnANAIsn orranrsgrmncn. l

TREATMENT er smits.

Loevhaa.

To all whom, @'15 may con-cern:

Be it known that I, RoGERRrBoT, a 'citi'- Specieation of Iletterslatent.h Application mea February 27,'19'12." serial No. 630,114.

zen of the Republic of France, residingat' 255"Bonlevard Voltaire,Paris, in the Republic of France, have invented certain new land usefulImprovements vin the Treatment I- a uniform color without markings.

tine.

One of the" essential features of thek presi ent invention consists intheprovision of meansfor holding the skintightly and unii formlystretched throughout all the' operations, a frame of suitable shapebeingv employed` for this purpose. This arrangement' has the followingadvantages indispensable for the treatment o f skins, in that `it`enables the skin to be simultaneously worked on bothy sides; it appearsmore or less trans'- parent thereby revealing l all the defects 'in theskin and enabling them to be remedied; T

and further it is possible to. expose the skin to considerablevariations of temperature without distorting or shrivelling it up.

yI shall now describe my inventionI with" reference to the which lvFigure 1 .show s a skin mounted inl .its'

accompanying' drawing, in

. frame andr Fig. 2 shows a vibratingmm vchine utilized for carrying ontthe invention.

The series of operations constituting-the new process are as follows 1.Stretching the skin in a suitable fram as shown for example in Fig.1,by. passing a cord d through rings b provided on the fra-me a andthrough hooks c engaged 'in the skin e. f -l 2. In the case of ldamagedskins,.stop.ping

that which it is desired to employ, a small piece of pumiced skin, bymeans of a soluf tion of gutta-percha'and benzin or turpen.-

. 3. Coating the skin on'both sides with a' solution for temporarily7`stopping'up' the.

it is desired to employ.

l". Patented Mar. 25,

30 Gelsiusthe skin is pumicedv on the `side 5. A sponge thata has beendipped into a tin, lead, iron, zinc or chrome mordant 1s then passedover the last-mentioned side of the skin.. The mordant will vary according' to the processl of tanning to which the 'It is evident that thisvsolution is merely given as an'example and that any other so`v lutioncontaining gutta-percha, gum-lac and -Skin has previously been submittedand ac- Areinforce or strengthen the 'skin'.j Thisso- `lution maybecomp'osed as follows:

sulfur may be employed for reinforcing and coloring the skins withoutthe ormationgof markings, and without thereby extending the scope of thepresent invention.

7. The frame a is then placed in the'apparatus shown in Fig. 2 of thedrawing@ This apparatus consists ofa box f mounted -on a tubular guide gsliding in a socketlz.

formingastandard or support. A pivot i -isprovided on' this socketvaround which is rot-ated a .toothed wheel .j by means of a transmissionbelt, the teeth of which wheel alternatelyiraise the guide g bycontacting with a roller Ic. It will be noticed that-the frame aisimmovably held. in the box f by set-screws. Itl thus results .that thevibrations `are integrally transmitted simulta.

neously to the skin-and Ato the distributer containing the powderedcolors.- -A'curtain mean be drawn beneath the distributer `Z duringtheworking of the apparatus so as J' f to prevent any particles of colorfalling lcontinues to be vibrated so as to be more deeply impregnatedand the desired color obtained. The colored particles referred to aboveessentially 'consist of powdered pieces of skin and th like which can bedyed to any color for the purpose of impart-ing the required color tothe skin.

8. This being eii'ected, the frame is placed in astove which isgradually heated up to, but not exceeding 120 Celsius. This operatiomisfor the purpose of vulcanizing the solution and rendering the Wholeresult perfectly homogeneous.

9. On being removed from the stove the back of the skin is pumiced so asto remove any coating'and to render the skin supple.

10.- Ifdesired the skins thus prepared can 'be treated in a glacmachine.

The process kabove described permits of obtaining very. fine resultswith skins of inferior quality.

. What I claim and desire to secure by Letters Patent in the UnitedStates is 1. A process for the treatment of skins consisting in pumicingthe skin at a suitable temperature, coating the side of the skin to becolored with a suitable mordant of tin,

2. In a process for the treatment of skins consistin in stretching theskin tightly,

coating t e skin on both sides with a pore filling solution, pumicingthe skin after drying at a suitable temperature, coating the side of theskin to be colored With a suitable mordant of tin, lead, iron, zinc, orthe like,

coating the same side of the skin with a solui zinc, or thelike, coatingthe same side of the skin with a solution of gutta-percha, gum-lac andsulfur, coloring the skin by means of pieces of skin .and the likesuitably colored, drying the skin by artificial heat, pumicing the backof the skin and while causing the skin to be vibrated, applying thecoloring matter`lto the skin. In testimony whereof I have hereunto setmy hand this 16th day of February 1912.

ROGER RIBOT. Inthe presence. ofy VICTOR PRvosT, LUCIEN MEMMINGER.

